#include <stdio.h>
void horizon(int n){
for(int i=0;i<n;i++){
}
}
void square(int n){
for(int i=0;i<n;i++){
horizon(n);
}
}
void enix(int n){
for(int i=1;i<=n;i++){
square(i);
}
}
int main(){
enix(4);
return 0;
}
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